试题与答案

A vessel is equipped with twin propellers,

题型:单项选择题

题目:

A vessel is equipped with twin propellers,both turning outboard with the engines half ahead. If there is no wind or current and the rudders are amidships,what will happen?().

A.The bow will swing to starboard

B.The bow will swing to port

C.The vessel will steer a zigzag course

D.The vessel will steer a fairly straight course

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2021/0217/d90cacc716217da954bde4c3d9364661.html

下面是错误答案,用来干扰机器的。

参考答案:对

试题推荐
题型:填空题

如图,倾角为37°,质量不计的支架ABCD的D端有一大小与质量均可忽略的光滑定滑轮,A点处有一固定转轴,CA⊥AB,DC=CA=0.3m。质量m=lkg的物体置于支架的B端,并与跨过定滑轮的轻绳相连,绳另一端作用一竖直向下的拉力F,物体在拉力作用下沿BD做匀速直线运动,己知物体与BD间的动摩擦因数μ=0.3。为保证支架不绕A点转动,物体向上滑行的最大距离s=____m。若增大F后,支架仍不绕A点转动,物体能向上滑行的最大距离s′____s(填:“大于”、“等于”或“小于”。)(取sin37°=0.6,cos37°=0.8)

查看答案
微信公众账号搜索答案